[Spce-user] Running CE behind an SBC

[Nerijus Barauskas]

On Thu, 10 Jan 2019 at 16:50, Daniel Grotti <dgrotti at sipwise.com> wrote:

> Hi Nerijus,
> it would be nice if you could share the full sip trace, in order to see
> also INVITE going from proxy->sems->lb->SBC
>
>
Thank you Daniel, I have placed the pcap on https://file.io/6P7ssT

Kind Regards,
Nerijus


> Thanks,
>
>
> --
> Head of Customer Support                               Sipwise GmbH
> e: dgrotti at sipwise.com                               Europaring F15
> t: +43(0)130120332                          A-2345 Brunn Am Gebirge
> w: www.sipwise.com          FN: 305595f      FG: LG Wiener Neustadt
>
> On 1/10/19 12:33 PM, Nerijus Barauskas wrote:
> > Hi,
> >
> > I have a CE mr6.5.2 running inside a private network. At the network
> > edge we have an SBC (IP YYY.YYY.YYY.YYY) which proxies the traffic
> > between the public network and the CE server.
> >
> > Phones (IP XXX.XXX.XXX.XXX) register via the SBC, which inserts a path
> > header and forwards to CE.
> >
> > Phones can make outound calls, but on inbound calls, CE ignores the
> > path and tries to send the call difrectly to the phone's IP
> > (XXX.XXX.XXX.XXX) present in the Contact.
> >
> > What appears to be happening is that the proxy is using the path to
> > send the request to the load balancer, but the rest of the path is
> > being ignored.
> >
> > Any hints appreciated.
> >
> > Below is the outbput of proxy ul show for the phone:
> >
> > # ngcp-kamctl proxy ul showphonetest at test.mydomain.com
> > {
> >   "AoR":"phonetest at test.mydomain.com",
> >   "Contacts": [
> >     {
> >       "Contact": {
> > "Address":"sip:phonetest at XXX.XXX.XXX.XXX
> :7477;transport=UDP;rinstance=0478b7f3dd34e980",
> >         "Expires": 388,
> >         "Q": -1,
> >         "Call-ID": "GGGGdiKBxQABNklNSjpyiw..",
> >         "CSeq": 2,
> >         "User-Agent": "Zoiper rv2.9.2",
> >         "Received": "[not set]",
> >         "Path":
> > "<sip:lb at 127.0.0.1
> ;lr;socket=sip:ZZZ.ZZZ.ZZZ.ZZZ:5060>,<sip:YYY.YYY.YYY.YYY;lr;received=sip:XXX.XXX.XXX.XXX:7477>",
> >         "State": "CS_SYNC",
> >         "Flags": 0,
> >         "CFlags": 0,
> >         "Socket": "udp:127.0.0.1:5062",
> >         "Methods": 975,
> >         "Ruid": "uloc-5c35f1ac-1103-aa",
> >         "Instance": "[not set]",
> >         "Reg-Id": 0,
> >         "Server-Id": 0,
> >         "Tcpconn-Id": -1,
> >         "Keepalive": 0,
> >         "Last-Keepalive": 1547118521,
> >         "Last-Modified": 1547118521
> >       }
> >     }
> >   ]
> > }
> >
> >
> > Here is the REGISTER packet:
> >
> > 2019/01/10 11:08:41.546039 YYY.YYY.YYY.YYY:5060 -> ZZZ.ZZZ.ZZZ.ZZZ:5060
> > REGISTERsip:test.mydomain.com;transport=UDP  SIP/2.0
> > Via: SIP/2.0/UDP
> > YYY.YYY.YYY.YYY;branch=z9hG4bKf8ec.1814ce53196f6e4039f3e2c7f94221dc.0
> > Via: SIP/2.0/UDP
> > 100.115.92.2:41451
> ;received=XXX.XXX.XXX.XXX;branch=z9hG4bK-524287-1---c067471c3487d2b7;rport=7477
> > Max-Forwards: 69
> > Contact:<sip:phonetest at XXX.XXX.XXX.XXX:7477;transport=UDP;rinstance=0478b7f3dd34e980>
>
> >
> > To:<sip:phonetest at test.mydomain.com;transport=UDP>
> > From:<sip:phonetest at test.mydomain.com;transport=UDP>;tag=40d2244b
> > Call-ID: GGGGdiKBxQABNklNSjpyiw..
> > CSeq: 1 REGISTER
> > Expires: 60
> > Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS,
> > INFO, SUBSCRIBE
> > User-Agent: Zoiper rv2.9.2
> > Allow-Events: presence, kpml, talk
> > Content-Length: 0
> > Supported: path
> > Path:<sip:YYY.YYY.YYY.YYY;lr;received=sip:XXX.XXX.XXX.XXX:7477>
> >
> > Kind Regards,
> > Nerijus Barauskas
> >
> > _______________________________________________
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> > Spce-user at lists.sipwise.com
> > https://lists.sipwise.com/listinfo/spce-user
>
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